1. Department of Medicine, Vanderbilt University, Nashville, Tennessee
2. Department of Pediatrics, Vanderbilt University, Nashville, Tennessee
3. Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
4. Department of Consumer Science and Education, University of Memphis, Memphis, Tennessee
5. Department of Medicine, Vanderbilt University; and Department of Family and Community Medicine, Meharry Medical College, Nashville, Tennessee